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Organosilicon composition, reaction product, and preparation method and application of reaction product

A technology of reaction products and compositions, used in adhesive additives, non-polymer adhesive additives, coatings, etc.

Active Publication Date: 2020-06-02
INST OF CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In this invention, when component (a) is selected from silicone resins that can undergo hydrosilylation reactions, the hydrosilylation catalyst used contains Pt components, and the problem of high yellowness index of the product cannot be avoided

Method used

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  • Organosilicon composition, reaction product, and preparation method and application of reaction product
  • Organosilicon composition, reaction product, and preparation method and application of reaction product
  • Organosilicon composition, reaction product, and preparation method and application of reaction product

Examples

Experimental program
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Embodiment 1

[0053] The photocurable silicone in this embodiment is prepared according to the following method:

[0054] (1) The linear polysiloxane containing H in the side group is used as a raw material, mixed evenly with the siloxane of the structure shown in the formula (I) and 4wt% photoinitiator 1173; the unsaturated polysiloxane shown in the formula (I) Hydrocarbyl compounds, R 1 for vinyl, R 2 , B 1 , B 2 , B 3 , B 4 Both are methyl, Z 1 ,Z 2 Both - OSiPh(Me) 2 , n is 5; the molar ratio of Si-H in the linear polysiloxane containing H in the side group to the vinyl group in the siloxane of the structure shown in formula (I) is 1.4:1;

[0055] (2) UV-cure the mixture of step (1) under the protection of an inert gas, the UV wavelength is 280nm, and the light intensity is 50 μW / cm 2 ;, the reaction time is 5min, and the photocurable silicone with a curing depth of 50nm is prepared.

Embodiment 2

[0057] On the basis of embodiment 1, the present embodiment is different in that: R 1 For ethynyl groups, 2 wt% antioxidant Irganox-1010 was added to the mixture, and other conditions remained unchanged, to obtain a photocurable silicone with a curing depth of 80 nm.

Embodiment 3

[0059] This example is based on Example 2, with the difference that 8 wt% of the defoamer BASF A10 is added to the mixture, and other conditions remain unchanged, to obtain a photocurable silicone with a curing depth of 100 nm.

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Abstract

The invention discloses an organic silicon composition, a reaction product, and a preparation method and application of the reaction product, wherein the composition comprises Si-H functional polysiloxane, a compound containing unsaturated alkyl and a photoinitiator, and the photoinitiator is a free radical type photoinitiator, and initiate a hydrosilylation reaction of the Si-H functional polysiloxane and the unsaturated alkyl in the composition under irradiation of an energy source. According to the invention, a free radical photoinitiator is excited by ultraviolet rays in a curing process of light-cured organic silicon to achieve a hydrosilylation reaction, so that the product has excellent optical and mechanical properties and a low yellow index, and a catalyst containing noble metal elements commonly used in traditional hydrosilylation is not used in the reaction so as to substantially reduce the cost.

Description

technical field [0001] The invention belongs to the technical field of organic-inorganic hybridization, and in particular relates to an organosilicon composition, a reaction product, a preparation method and an application thereof. Background technique [0002] The modification or curing of polysiloxane is usually achieved through higher temperature and longer time treatment, resulting in higher time cost and energy cost. Therefore, many researchers have begun to use rapid prototyping UV curing to complete the above reaction, which reduces the time cost of the reaction and reduces the burden on the environment. [0003] The ultraviolet light curing reaction of polysiloxane requires the selection of specific photosensitive groups, and the types of photosensitive polysiloxanes that are widely used are mainly polysiloxanes containing acrylate groups and epoxy groups. For the UV curing of polysiloxane containing acrylate group, it has high reactivity, fast reaction rate, no add...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/18C09D183/05C09D7/63C09J183/05C09J11/06C08J3/24C08L83/05
CPCC08J3/24C08J5/18C08J2383/05C09D183/04C09J11/06C09J183/04C09D7/63
Inventor 曹新宇尚欣欣马永梅张榕本方世璧张京楠郑鲲叶钢
Owner INST OF CHEM CHINESE ACAD OF SCI
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